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Article(id=1321482002310746119, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, articleNumber=null, orderNo=null, doi=10.13234/j.issn.2095-2805.2025.3.245, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1650124800000, receivedDateStr=2022-04-17, revisedDate=1666972800000, revisedDateStr=2022-10-29, acceptedDate=1668096000000, acceptedDateStr=2022-11-11, onlineDate=1792995461298, onlineDateStr=2026-10-26, pubDate=1748534400000, pubDateStr=2025-05-30, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1792995461298, onlineIssueDateStr=2026-10-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1792995461298, creator=13701087609, updateTime=1792995461298, updator=13701087609, issue=Issue{id=1321481963769287353, tenantId=1146029695717560320, journalId=1146031654075715584, year='2025', volume='23', issue='3', pageStart='1', pageEnd='372', issueExtLink='null', onlineDate='null', pubDate='1748534400000', pubDateStr='2025-05-30', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1792995452109, creator='13701087609', updateTime=1792995578032, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321482491983147168, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321482491983147169, tenantId=1146029695717560320, journalId=1146031654075715584, issueId=1321481963769287353, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=245, endPage=256, ext={EN=ArticleExt(id=1321482002512072712, articleId=1321482002310746119, tenantId=1146029695717560320, journalId=1146031654075715584, language=EN, title=Design of DC Modular Multilevel Converter for Interconnection of HVDC Networks with Different Line Topologies, columnId=1152281491305755501, journalTitle=Journal of Power Supply, columnName=DC-DC Converters, runingTitle=null, highlight=null, articleAbstract=

DC-DC converters are key devices for realizing the interconnection of high voltage direct current (HVDC) networks with different voltage levels and line topologies. Owing to their advantages such as increasing the controllability of power grid and enhancing the power flow control, voltage regulation and fault blocking capabilities of power grid, DC-DC converters have become one of the research hotspots with the gradual construction of novel power systems, among which the DC modular multilevel converter (DC-MMC) is an effective and non-isolated method for interconnecting HVDC systems with the same line topology. However, DC systems in practice often have large differences in voltage levels and line topologies. In this paper, a novel control strategy for a flexible DC-MMC is proposed, which can realize the interconnection of HVDC systems with different line topologies, such as bipolar and symmetric monopolar interconnection. First, the characteristics of different line topologies in a HVDC transmission system are introduced in detail. Then, a mathematical model including variable transformation is established for the novel DC-MMC, and a control method based on an average bridge arm model and simplified DC grid is put forward. Finally, the simulation results in MATLAB/Simulink show that the proposed method can guarantee the normal operation of DC-MMC in both the normal and degraded modes.

, authors=Shihong YOU1, Jun ZHOU1, Hua CHENG1, Zhongli MENG1, Meng WANG2, authorsList=Shihong YOU, Jun ZHOU, Hua CHENG, Zhongli MENG, Meng WANG, authorCompany=null, correspAuthors=Shihong YOU, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1321482002759536649, articleId=1321482002310746119, tenantId=1146029695717560320, journalId=1146031654075715584, language=CN, title=用于不同线路拓扑高压直流电网高效互联的直流模块化多电平变换器设计, columnId=1149829799759339522, journalTitle=电源学报, columnName=DC-DC变换器, runingTitle=null, highlight=null, articleAbstract=

DC-DC变换器是实现不同电压等级和拓扑结构的高压直流HVDC（high voltage direct current）电网互联的关键设备，随着新型电力系统的逐步建设，DC-DC变换器成为新型电力系统领域的研究热点之一。DC-DC变换器具有许多优点：可增加电网的可控性，可增强电网潮流控制、电压调节和故障阻断的能力。其中，直流模块化多电平变换器DC-MMC（DC modular multilevel converter）是用于互连具有相同线路拓扑HVDC系统的一种有效非隔离方法，然而，实际中直流系统往往电压等级和拓扑结构差别较大。基于此，提出了一种新型柔性DC-MMC的控制策略，该控制方法可实现不同线路拓扑HVDC的互连，如双极子与对称单极子互连。首先，详细阐述了高压直流输电系统中不同线路拓扑的特性；然后，针对新型DC-MMC建立了1种含变量变换的数学模型，并提出了基于平均桥臂模型和简化直流电网的控制方法；最后，在MATLAB/Simulink中进行仿真验证，结果验证了所提方法可保障DC-MMC在正常运行和降级运行下均能正常工作。

, authors=游仕洪1, 周俊1, 程华1, 孟重力1, 王猛2, authorsList=游仕洪, 周俊, 程华, 孟重力, 王猛, authorCompany=null, correspAuthors=游仕洪, authorNote=

周俊（1986—　），男，硕士，工程师。研究方向：电力市场交易，综合能源服务。E-mail：。

程华（1979—　），男，硕士，高级经济师。研究方向：电力营销技术。E-mail：。

孟重力（1984—　），男，硕士，工程师。研究方向：电力营销技术。E-mail：。

王猛（1983—　），男，硕士，高级工程师。研究方向：MMC设计与控制技术。E-mail：。

, correspAuthorsNote=
游仕洪（1979—　），男，通信作者，硕士，高级工程师。研究方向：MMC控制。E-mail：。
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周俊（1986—　），男，硕士，工程师。研究方向：电力市场交易，综合能源服务。E-mail：。

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周俊（1986—　），男，硕士，工程师。研究方向：电力市场交易，综合能源服务。E-mail：。

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程华（1979—　），男，硕士，高级经济师。研究方向：电力营销技术。E-mail：。

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程华（1979—　），男，硕士，高级经济师。研究方向：电力营销技术。E-mail：。

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孟重力（1984—　），男，硕士，工程师。研究方向：电力营销技术。E-mail：。

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孟重力（1984—　），男，硕士，工程师。研究方向：电力营销技术。E-mail：。

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王猛（1983—　），男，硕士，高级工程师。研究方向：MMC设计与控制技术。E-mail：。

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王猛（1983—　），男，硕士，高级工程师。研究方向：MMC设计与控制技术。E-mail：。

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用于不同线路拓扑高压直流电网高效互联的直流模块化多电平变换器设计
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游仕洪 1 , 周俊 1 , 程华 1 , 孟重力 1 , 王猛 2
电源学报 | DC-DC变换器 2025,23(3): 245-256
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电源学报 |DC-DC变换器 2025 , 23 (3) : 245 -256
用于不同线路拓扑高压直流电网高效互联的直流模块化多电平变换器设计
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孟重力（1984—　），男，硕士，工程师。研究方向：电力营销技术。E-mail：。

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游仕洪1 , 周俊1 , 程华1 , 孟重力1 , 王猛2
作者信息
  • 1.江苏省张家港供电公司营销部，张家港　215600
  • 2.国网青海省电力公司经济技术研究院，西宁　810000
通讯作者:
游仕洪（1979—　），男，通信作者，硕士，高级工程师。研究方向：MMC控制。E-mail：。
作者简介:

周俊（1986—　），男，硕士，工程师。研究方向：电力市场交易，综合能源服务。E-mail：。

程华（1979—　），男，硕士，高级经济师。研究方向：电力营销技术。E-mail：。

孟重力（1984—　），男，硕士，工程师。研究方向：电力营销技术。E-mail：。

王猛（1983—　），男，硕士，高级工程师。研究方向：MMC设计与控制技术。E-mail：。

Design of DC Modular Multilevel Converter for Interconnection of HVDC Networks with Different Line Topologies
Shihong YOU1 , Jun ZHOU1 , Hua CHENG1 , Zhongli MENG1 , Meng WANG2
Affiliations
  • 1.Marketing Department, Zhangjiagang Power Supply Company, Zhangjiagang 215600, China
  • 2.Economic and Technological Research Institute, State Grid Qinghai Electric Power Company, Xining 810000, China
出版时间: 2025-05-30 doi: 10.13234/j.issn.2095-2805.2025.3.245
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DC-DC变换器是实现不同电压等级和拓扑结构的高压直流HVDC（high voltage direct current）电网互联的关键设备，随着新型电力系统的逐步建设，DC-DC变换器成为新型电力系统领域的研究热点之一。DC-DC变换器具有许多优点：可增加电网的可控性，可增强电网潮流控制、电压调节和故障阻断的能力。其中，直流模块化多电平变换器DC-MMC（DC modular multilevel converter）是用于互连具有相同线路拓扑HVDC系统的一种有效非隔离方法，然而，实际中直流系统往往电压等级和拓扑结构差别较大。基于此，提出了一种新型柔性DC-MMC的控制策略，该控制方法可实现不同线路拓扑HVDC的互连，如双极子与对称单极子互连。首先，详细阐述了高压直流输电系统中不同线路拓扑的特性；然后，针对新型DC-MMC建立了1种含变量变换的数学模型，并提出了基于平均桥臂模型和简化直流电网的控制方法；最后，在MATLAB/Simulink中进行仿真验证，结果验证了所提方法可保障DC-MMC在正常运行和降级运行下均能正常工作。

DC-DC变换器  /  高压直流  /  直流模块化多电平变换器  /  线路拓扑  /  非隔离变换器

DC-DC converters are key devices for realizing the interconnection of high voltage direct current (HVDC) networks with different voltage levels and line topologies. Owing to their advantages such as increasing the controllability of power grid and enhancing the power flow control, voltage regulation and fault blocking capabilities of power grid, DC-DC converters have become one of the research hotspots with the gradual construction of novel power systems, among which the DC modular multilevel converter (DC-MMC) is an effective and non-isolated method for interconnecting HVDC systems with the same line topology. However, DC systems in practice often have large differences in voltage levels and line topologies. In this paper, a novel control strategy for a flexible DC-MMC is proposed, which can realize the interconnection of HVDC systems with different line topologies, such as bipolar and symmetric monopolar interconnection. First, the characteristics of different line topologies in a HVDC transmission system are introduced in detail. Then, a mathematical model including variable transformation is established for the novel DC-MMC, and a control method based on an average bridge arm model and simplified DC grid is put forward. Finally, the simulation results in MATLAB/Simulink show that the proposed method can guarantee the normal operation of DC-MMC in both the normal and degraded modes.

DC-DC converter  /  high voltage direct current (HVDC)  /  DC modular multilevel converter (DC-MMC)  /  line topology  /  non-isolated converter
游仕洪, 周俊, 程华, 孟重力, 王猛. 用于不同线路拓扑高压直流电网高效互联的直流模块化多电平变换器设计. 电源学报, 2025 , 23 (3) : 245 -256 . DOI: 10.13234/j.issn.2095-2805.2025.3.245
Shihong YOU, Jun ZHOU, Hua CHENG, Zhongli MENG, Meng WANG. Design of DC Modular Multilevel Converter for Interconnection of HVDC Networks with Different Line Topologies[J]. Journal of Power Supply, 2025 , 23 (3) : 245 -256 . DOI: 10.13234/j.issn.2095-2805.2025.3.245

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doi: 10.13234/j.issn.2095-2805.2025.3.245
  • 接收时间：2022-04-17
  • 首发时间：2026-10-26
  • 出版时间：2025-05-30
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  • 收稿日期：2022-04-17
  • 修回日期：2022-10-29
  • 录用日期：2022-11-11
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    1.江苏省张家港供电公司营销部，张家港　215600
    2.国网青海省电力公司经济技术研究院，西宁　810000

通讯作者:

游仕洪（1979—　），男，通信作者，硕士，高级工程师。研究方向：MMC控制。E-mail：。
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